1. The United Nations Procurement Division/GPSS in Entebbe, seeks to engage a qualified supplier for the refilling of Compressed Dry Air (CDA) gas in Entebbe. Interested suppliers must be capable of providing air that meets ISO 8573-1 Class 1 purity standards, equivalent to the quality specifications commonly applied to Scuba breathing air: • Particles: Extremely low particle count. • Humidity: Very low dew point (≤ −70 °C) prevents regulator freeze up. • Oil: Must be ≤ 0.01 mg/m³. 2. ONLY vendors that meet the above requirements are encouraged to express interest. The detailed Specifications will be provided to suppliers that express interest in response to this REOI. 3. Electronic response as guided below to this EOI is preferred.       Specific Requirements/Information Please note that this request for expression of interest is not an invitation to submit a bid and submission of EOI would not automatically warrant receipt of solicitation documents. The UN reserves the right to reject EOIs received after the deadline. Please see UNGM registration guidance below.